Stephen de Meinill the First, s. and h., was according participation in the benefits resulting from his father's grant to St. Mary's Abbey, York, circa 1100-06, and witnessed a charter earlier than circa 1119. As a neighbour of Walter Espec he witnessed the latter's charter to Rievaulx Abbey. In 1143 he was instrumental in negotiating a truce between the Bishop of Durham and William Cumin. He granted the place called Scarth in Whorlton for the service of God. He m. Sibil, probably a daughter of Ansketil de Bulmer. He was living in 1145.
